"Elf proef" script

4 posts in this topic

jvanegmond 293

In Dutch banking there is a test called the elf proef to test whether or not any bank number is valid or not. The calculation algorithm is quite simple but I couldn't find any online checks at the time so wrote one of my own. Now I have found this tool where you can do it online: http://cgi.dit.nl/bank.cgi

You can find more about the algorithm here: http://nl.wikipedia.org/wiki/Elfproef

This is the script that checks a dutch bank account number and tells you whether it is valid or not: